4a60dc748d
Its now same as __nf_ct_l4proto_find(), so rename that to nf_ct_l4proto_find and use it everywhere. It never returns NULL and doesn't need locks or reference counts. Before this series: 302824 net/netfilter/nf_conntrack.ko 21504 net/netfilter/nf_conntrack_proto_gre.ko text data bss dec hex filename 6281 1732 4 8017 1f51 nf_conntrack_proto_gre.ko 108356 20613 236 129205 1f8b5 nf_conntrack.ko After: 294864 net/netfilter/nf_conntrack.ko text data bss dec hex filename 106979 19557 240 126776 1ef38 nf_conntrack.ko so, even with builtin gre, total size got reduced. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* This header is used to share core functionality between the
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* standalone connection tracking module, and the compatibility layer's use
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* of connection tracking.
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*
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* 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
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* - generalize L3 protocol dependent part.
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*
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* Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h
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*/
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#ifndef _NF_CONNTRACK_CORE_H
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#define _NF_CONNTRACK_CORE_H
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#include <linux/netfilter.h>
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#include <net/netfilter/nf_conntrack_l4proto.h>
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#include <net/netfilter/nf_conntrack_ecache.h>
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/* This header is used to share core functionality between the
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standalone connection tracking module, and the compatibility layer's use
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of connection tracking. */
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unsigned int nf_conntrack_in(struct sk_buff *skb, const struct nf_hook_state *state);
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int nf_conntrack_init_net(struct net *net);
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void nf_conntrack_cleanup_net(struct net *net);
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void nf_conntrack_cleanup_net_list(struct list_head *net_exit_list);
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void nf_conntrack_proto_pernet_init(struct net *net);
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void nf_conntrack_proto_pernet_fini(struct net *net);
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int nf_conntrack_proto_init(void);
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void nf_conntrack_proto_fini(void);
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int nf_conntrack_init_start(void);
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void nf_conntrack_cleanup_start(void);
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void nf_conntrack_init_end(void);
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void nf_conntrack_cleanup_end(void);
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bool nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
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const struct nf_conntrack_tuple *orig);
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/* Find a connection corresponding to a tuple. */
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struct nf_conntrack_tuple_hash *
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nf_conntrack_find_get(struct net *net,
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const struct nf_conntrack_zone *zone,
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const struct nf_conntrack_tuple *tuple);
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int __nf_conntrack_confirm(struct sk_buff *skb);
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/* Confirm a connection: returns NF_DROP if packet must be dropped. */
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static inline int nf_conntrack_confirm(struct sk_buff *skb)
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{
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struct nf_conn *ct = (struct nf_conn *)skb_nfct(skb);
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int ret = NF_ACCEPT;
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if (ct) {
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if (!nf_ct_is_confirmed(ct))
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ret = __nf_conntrack_confirm(skb);
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if (likely(ret == NF_ACCEPT))
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nf_ct_deliver_cached_events(ct);
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}
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return ret;
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}
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void print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
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const struct nf_conntrack_l4proto *proto);
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#define CONNTRACK_LOCKS 1024
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extern spinlock_t nf_conntrack_locks[CONNTRACK_LOCKS];
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void nf_conntrack_lock(spinlock_t *lock);
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extern spinlock_t nf_conntrack_expect_lock;
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#endif /* _NF_CONNTRACK_CORE_H */
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